Non-metallic building materials, namely mortar for building, concrete, asphalt-based coating and sealants for use on roofs, walls, and pavements; natural and artificial stones, cement, lime building materials, mortar for building, gypsum for use as building materials, gravel, sandstone pipes, cement pipes, road building products, namely, tar, asphalt, pitch and bitumen, transportable homes being manufactured homes not of metal, stone monuments and chimneys not of metal
Nonmetallic Building Materials